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Today most of the EU population is connected to sewage networks. Over the last twenty years, marked increases have occurred both in the proportion of the population connected to wastewater treatment as well as in wastewater treatment technology. In central Europe and the Nordic countries most wastewater now receives tertiary treatment (i.e. removal of organic matter and nutrients), while in southern and some central European countries most wastewater receives secondary treatment (removal of organic matter). Some large cities still discharge their wastewater nearly untreated.
This map shows the locations of agglomerations (usually equal to communities of homes, shops, hospitals and certain industries) classified by treatment type.
The size of each segment of the pie charts is proportional to the number of agglomerations and their method of treating their waste water by type. The segments are coloured according to the different treatment types.
For references, please go to https://www.eea.europa.eu/archived/archived-content-water-topic/map-of-the-week/urban-waste-water-treatment or scan the QR code.
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